Baby acts like he wants the breast but spits it immediately to cry and looking for the breast again

I'm at my wits ends. My baby is constantly doing the eating cue (opens his mouth, looks for breast, sucks his fist). When I give him the breast he immediately spits it and is opening his mouth as if he was looking for it again. When he gets it, he spits it again. And starts to cry. And it's hapenning over and over again. I have no idea what to do. I have plenty of milk so he has food all the time. He spits pacifiers too.